Daylight Savings Time and Acute Myocardial Infarction

What is the association of daylights savings time (DST) with the incidence and outcomes of myocardial infarction?In this cross-sectional study of 168 870 patients, no significant differences were found in the incidence rates of acute myocardial infarction in DST weeks compared with the week before or after. Additionally, there were no significant differences in outcomes, including in-hospital mortality and stroke, between these weeks.These findings suggest that that there is no significant association between DST and the incidence and outcomes of patients presenting with myocardial infarction.

Corresponding Author: Jennifer A. Rymer, MD, MBA, MHS, Duke University Medical Center, Durham, NC 27517 (Jennifer.rymer@duke.edu).

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